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    • 41. 发明公开
    • 생석회 제조 공정에서 발생되는 분진을 이용한 소결광제조 장치 및 방법
    • 使用快速制造过程中生成的尘屑制造烧结炉的装置和方法
    • KR1020030097542A
    • 2003-12-31
    • KR1020020034952
    • 2002-06-21
    • 주식회사 포스코
    • 이창현최봉호박종화유성종
    • C22B1/16
    • Y02P10/212
    • PURPOSE: An apparatus and a method for fabricating sintered ore using dust generated in quicklime fabricating process are provided to improve sintering productivity by recycling dust generated when calcining limestone in rotary kiln as an additive added to blending raw materials when mixing and granulating sintering raw materials. CONSTITUTION: In a sintered ore fabricating apparatus comprising a mixer for producing a mixture by mixing various raw materials including iron ore, fuel and additives, a remixer for forming the mixture in a granulated shape, and a sintering machine for producing sintered ore by igniting the mixture formed in a granulated shape, the apparatus for fabricating sintered ore using dust generated in quicklime fabricating process further comprises an addition equipment comprising a storage tank(31) at which load cell(36) is installed to measure weight, and in which limestone dust sucked in is stored, a transfer pipe(38) installed on the storage tank(31) to form a passageway for injecting limestone dust into the storage tank(31), a negative pressure forming device installed on the transfer pipe(38) to form a negative pressure, a gate(32) installed at a lower part of the storage tank(31) to open and close the storage tank(31), a rotary feeder(33) for uniformly dropping limestone dust by driving of driving means when the gate(32) is opened, and a controller for controlling operation of the negative pressure forming device, gate(32) and rotary feeder(33) by receiving signals of the load cell(36).
    • 目的:提供使用生石灰制造工艺中产生的粉末的烧结矿的制造装置和方法,通过回收在回转窑中煅烧石灰石时产生的粉尘作为添加到混合原料中的添加剂混合并制粒烧结原料而提高烧结生产率。 构成:在一种烧结矿石制造装置中,包括用于通过混合包括铁矿石,燃料和添加剂在内的各种原料制备混合物的混合器,用于形成颗粒形状的混合物的再混合器和通过点燃烧结矿石来生产烧结矿石的烧结机 混合物形成为粒状,使用生石灰制造工艺中产生的粉尘制造烧结矿的装置还包括添加设备,其包括储存罐(31),在储罐(31)处安装称重传感器(36)以测量重量,其中石灰石粉尘 被吸入的容器中安装有传送管(38),该传送管(38)安装在储存箱(31)上,以形成用于将石灰石粉尘注入到储存箱(31)中的通道;负压成形装置,安装在传送管(38)上以形成 负压,安装在储罐(31)的下部以打开和关闭储存箱(31)的门(32),用于通过drivin均匀地滴下石灰石粉尘的旋转进料器(33) (32)打开时的驱动装置,以及通过接收负载传感器(36)的信号来控制负压成形装置,门(32)和旋转进给器(33)的动作的控制器。
    • 42. 发明授权
    • 극저탄소강 제조시 철-실리콘을 사용한 탈산방법
    • 극저탄소강제조시철 - 실리콘을사용한탈산방극
    • KR100406434B1
    • 2003-11-19
    • KR1019990053905
    • 1999-11-30
    • 주식회사 포스코
    • 최수호이창현
    • C21C7/06
    • PURPOSE: A deoxidation method is provided which secures the equivalent level of quality as existing ultra-low carbon steel and reduces steelmaking cost due to the reduction of Al consumed amount by partially deoxidizing molten steel using an inexpensive deoxidizer instead of adding aluminum only as a deoxidizer for the purpose of deoxidizing the molten steel. CONSTITUTION: In a method for deoxidizing molten steel for cold rolling ultra-low carbon steel containing 0.01 wt.% or less of carbon, the method comprises the steps of partially deoxidizing molten steel by adding Fe-Si to the molten steel of the ultra-low carbon steel having a dissolved oxygen of 250 to 400 ppm in the vacuum degassing process; and deoxidizing the molten steel by injecting aluminum into the partially deoxidized molten steel, wherein a regulated value of dissolved £Si|inside the molten steel is maintained in the range of 0.02 to 0.03 wt.%.
    • 目的:提供一种脱氧方法,该方法与现有的超低碳钢保证相当的质量水平,并通过使用廉价的脱氧剂部分脱氧钢水而不是仅作为脱氧剂添加铝来减少铝消耗量,从而降低了炼钢成本 目的是脱氧钢水。 本发明提供一种含碳量为0.01重量%以下的超低碳钢冷轧用钢水的脱氧方法,其特征在于,在钢水中添加Fe-Si,使钢水部分脱氧, 在真空脱气过程中具有250至400ppm的溶解氧的低碳钢; 并且通过向所述部分脱氧的钢水中注入铝来使所述钢水脱氧,其中所述钢水中的溶解硅的限定值被保持在0.02至0.03重量%的范围内。
    • 43. 发明公开
    • 극저황성분을 갖는 극저탄소강 제조방법
    • 制造超低碳钢超低硫钢的方法
    • KR1020030039107A
    • 2003-05-17
    • KR1020010070036
    • 2001-11-12
    • 주식회사 포스코
    • 최봉호최수호이창현박종화
    • C21C7/04
    • PURPOSE: A method for manufacturing ultra-low carbon steel having 20 ppm or less of sulfur, that is, ultra-low sulfur by reducing content of sulfur contained slag charged into converter along with hot metal, thereby reducing resulfurization quantity in converter process is provided. CONSTITUTION: In a method for manufacturing ultra-low carbon steel containing 20 ppm or less of sulfur, the method comprises first slag off step of slagging off slag produced by injecting desulfurizer into hot metal tapped from blast furnace; second slag off step of slagging off slag produced by injecting desulfurizer into the first slag off treated hot metal; a step of performing injection operation by charging the second slag off treated hot metal into converter; and a step of decarburizing molten steel tapped from the converter in degassing facility, wherein the first slag off step comprises the steps of receiving the hot metal tapped from the blast furnace into torpedo car; injecting CaCO3 based desulfurizer into the hot metal received into the torpedo car; receiving the hot metal desulfurized in the torpedo car into charging ladle; and slagging off slag that is charged into the charging ladle along with the desulfurized hot metal.
    • 目的:提供具有20ppm以下硫的超低碳钢的方法,即通过减少与铁水一起添加到转炉中的含硫渣的含量,从而降低转化器工艺中的再硫化量来获得超低硫。 。 构成:在含有20ppm以下硫的超低碳钢的制造方法中,该方法包括:通过将从脱硫器注入到高炉中的铁水中注入脱硫渣而除渣的第一除渣步骤; 通过将脱硫剂注入到经过处理的第一炉渣中而产生的渣的第二渣排渣步骤; 通过将第二炉渣从处理过的热金属装入转炉中进行喷射操作的步骤; 以及在脱气设备中从转炉脱水的钢水脱碳步骤,其中,第一除渣步骤包括将从高炉挖出的铁水接收到鱼雷车中的步骤; 将CaCO3基脱硫剂注入到鱼雷车内的铁水中; 将鱼雷车中脱硫的铁水接收到充料包中; 并且与脱硫的热金属一起排出装入充填钢包中的炉渣。
    • 44. 发明公开
    • 에이피아이 강관용 강판의 제조방법
    • API(美国石油学院)钢管制造钢板的方法
    • KR1020010046725A
    • 2001-06-15
    • KR1019990050606
    • 1999-11-15
    • 주식회사 포스코
    • 조재완김광천이창현황상택
    • C21C7/00
    • PURPOSE: A method for manufacturing steel sheet for API (America Petroleum Institute) steel pipe is provided to improve cleanliness of steel by effectively securing dissolved £Ca|in steel, and prevent abnormal operation such as breaking out of steel billet in the continuous casting operation by simultaneously controlling composition and shape of inclusions and minimizing £H|in molten steel. CONSTITUTION: The method comprises the steps of top bubbling pretreated and converter refined molten steel at a flow rate of 1.0 to 1.2 Nm2/min for 5 to 8 minutes in a non-operating furnace; bottom bubbling the top bubbled molten steel at a flow rate of 1.0 to 1.2 Nm2/min for 3 to 5 minutes in an LF (ladle furnace); and Ca-Si wire feeding a Ca-Si wire of 250 to 350 kg at a speed of 250 to 300 m/min, wherein the method further comprises a step of degassing the molten steel at an RH after top bubbling the converter refined molten steel.
    • 目的:提供一种用于制造API(美国石油学会)钢管的钢板的方法,通过有效地确保钢中溶解的钢铁,提高钢的清洁度,防止连铸过程中钢坯断裂等异常操作 通过同时控制夹杂物的组成和形状并最小化钢水中的£H |。 方案:该方法包括以下步骤:在未操作的炉中以1.0至1.2Nm 2 / min的流速将预处理和转化精炼钢水顶吹5至8分钟; 在LF(钢包炉)中以1.0至1.2Nm 2 / min的流速将顶部鼓泡的钢水鼓泡3至5分钟; 以及以250〜300m / min的速度输送250〜350kg的Ca-Si线的Ca-Si线,其中,所述方法还包括以下步骤:在所述转炉精炼钢水 。
    • 45. 发明授权
    • 탈린용선을 이용한 전로 정련조업방법
    • 使用去离子金属转化器精炼的方法
    • KR100264996B1
    • 2000-09-01
    • KR1019960065676
    • 1996-12-14
    • 주식회사 포스코
    • 선민기안북일이창현최규현
    • C21C5/28
    • PURPOSE: An operating method of converter steelmaking process using dephosphorized hot metal is provided to maximize the advantage of catch£C|operation by appropriate controlling of slag so that effective molten steel refinement can be carried out with even little amount of oxygen blowing. CONSTITUTION: In a converter steelmaking process using dephosphorized hot metal of which phosphorous content is between 0.03 and 0.05%, the present method is characterized in that final carbon content in the hot metal is controlled in the range of 0.08 to 0.30wt.% by adding 1.1¯1.5kg of silica comprising SiO2 90-98wt.% and impurities per 1 ton·hot metal while blowing oxygen. The particle size distribution of the silica ranges from 20 to 50mm.
    • 目的:提供使用脱磷铁水的转炉炼钢工艺的操作方法,通过适当控制炉渣来最大限度地提高抓斗的运行效率,从而在少量吹氧的情况下可以进行有效的钢水精炼。 构成:在使用磷含量为0.03〜0.05%的脱磷铁水的转炉炼钢工艺中,本方法的特征在于,将金属中的最终碳含量控制在0.08〜0.30重量%的范围内, 1.1〜1.5kg二氧化硅,其中SiO 2为90-98重量%,每1吨热金属杂质同时吹氧。 二氧化硅的粒度分布范围为20〜50mm。
    • 48. 发明公开
    • 전로 가스 회수 방법
    • 收集转炉气体的方法
    • KR1020070005048A
    • 2007-01-10
    • KR1020050059968
    • 2005-07-05
    • 주식회사 포스코
    • 조길동이창현장성완
    • C21C5/38
    • C21C5/38C21C2100/06
    • A method for recovering converter gas which utilizes gas of high efficiency by recovering a by-product gas generated in a converter refining process more efficiently, and reduces energy by increasing efficiency of a converter by-product gas used in a power plant is provided. A method for recovering converter gas comprises the steps of: calculating an expected generation amount of the converter by-product gas before converter refining; determining an expected recovery initiation time point and an expected recovery completion time point per contents of CO contained in the by-product gas using the expected generation amount of the converter by-product gas; and starting converter refining to recover the by-product gas at the expected recovery initiation time point and complete recovery of the by-product gas at the expected recovery completion time point, wherein the expected recovery initiation time point and the expected recovery completion time point are determined according to gas holder levels, other converters' blowing circumstances and power plant consumption amounts when performing refining in a plurality of converters at the same time.
    • 提供了一种利用高效率气体回收转化器气体的方法,通过在转炉精炼过程中更有效地回收副产物气体,并且通过提高发电厂中使用的转化器副产物气的效率来降低能量。 一种回收转化器气体的方法,包括以下步骤:计算转炉精炼前的转化器副产物气的预计产生量; 使用所述转化器副产物气体的预期产生量来确定副产物气体中所含CO的每个含量的预期恢复开始时间点和预期恢复完成时间点; 并且在预期的恢复开始时间点开始转化器精炼以回收副产物气体,并在预期的恢复完成时间点完成副产物气体的回收,其中预期的恢复开始时间点和预期的恢复完成时间点为 在多个转换器中同时进行精炼时,根据气体保持器水平,其他转炉吹风情况和发电厂消耗量确定。
    • 49. 发明授权
    • 에이피아이 강관용 강판의 제조방법
    • API钢管钢板的制造方法
    • KR100553609B1
    • 2006-02-22
    • KR1019990050606
    • 1999-11-15
    • 주식회사 포스코
    • 조재완김광천이창현황상택
    • C21C7/00
    • 본 발명은 제철소의 제강공정중 2차정련 공정의 LF에서 〔Ca〕을 접종시켜 강중 개재물의 절대량을 저감시키고, 개재물의 형상 및 조성을 제어하며, 강의 품질을 향상시킬 수 있도록 한 API 강관용 강판의 제조방법에 관한 것이다.
      본 발명은 API 강관용 강판의 제조방법에 있어서, 예비처리 및 전로정련된 용강을 비가동로에서 1.0∼1.2Nm
      2 /분 유량으로 5∼8분 탑 버블링을 실시하는 단계와; 상기 단계후 LF에서 1.0∼1.2Nm
      2 /분 유량으로 3∼5분 탑 및 바텀 버블링을 실시하는 단계와; 상기 단계후 250∼350Kg의 Ca-Si 와이어를 250∼300m/분의 속도로서 Ca-Si 와이어 피딩을 실시하는 단계로 이루어지는 것을 특징으로 한다.
      상기와 같은 본 발명의 구성과 작용에 의하여 〔Ca〕 취입전 용강중 〔S〕 저감으로 개재물의 절대량이 저감되고, 개재물의 조성 및 형상의 제어가 가능하며, Ca-Si 와이어 피딩에 의한 〔Ca〕 취입으로 소강에서의 〔Ca〕 실수율이 향상되는 한편, LF처리 이전에 RH에서 탈가스 처리를 통해 용강중의 〔H〕 농도 저감 및 용존 〔Ca〕를 확보함으로써 제강 및 연주공정에서의 작업성 향상 및 제강성 결함을 줄이고, 주편파단과 같은 조업이상을 줄일 수 있는 효과가 제공된다.
      API 강관